Vulnerability Details CVE-2022-41961
BigBlueButton is an open source web conferencing system. Versions prior to 2.4-rc-6 are subject to Ineffective user bans. The attacker could register multiple users, and join the meeting with one of them. When that user is banned, they could still join the meeting with the remaining registered users from the same extId. This issue has been fixed by improving permissions such that banning a user removes all users related to their extId, including registered users that have not joined the meeting. This issue is patched in versions 2.4-rc-6 and 2.5-alpha-1. There are no workarounds.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 17.2%
CVSS Severity
CVSS v3 Score 4.3
References
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.4-rc-6
- https://github.com/bigbluebutton/bigbluebutton/releases/tag/v2.5-alpha-1
- https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-wxjp-h88g-7fqg
Products affected by CVE-2022-41961
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cpe:2.3:a:bigbluebutton:bigbluebutton:-
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cpe:2.3:a:bigbluebutton:bigbluebutton:0.7
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cpe:2.3:a:bigbluebutton:bigbluebutton:0.71
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cpe:2.3:a:bigbluebutton:bigbluebutton:0.8
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cpe:2.3:a:bigbluebutton:bigbluebutton:0.81
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cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.0
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cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.1
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cpe:2.3:a:bigbluebutton:bigbluebutton:0.9.2
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cpe:2.3:a:bigbluebutton:bigbluebutton:1.0.0
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cpe:2.3:a:bigbluebutton:bigbluebutton:1.1.0
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.0
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.0
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.1
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.10
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.11
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.12
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.14
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.15
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.16
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.17
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.18
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.19
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.2
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.20
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.21
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.22
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.23
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.24
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.25
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.26
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.27
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.28
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.29
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.3
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.30
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.31
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.4
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.5
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.6
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.7
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.8
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.2.9
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.0
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.1
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.10
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.11
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.12
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.13
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.14
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.15
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.16
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.17
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.2
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.3
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.4
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.5
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.6
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.7
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.8
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.9
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cpe:2.3:a:bigbluebutton:bigbluebutton:2.4